From mboxrd@z Thu Jan  1 00:00:00 1970
From: Guenter Roeck <linux@roeck-us.net>
Subject: Re: [PATCH non-pretimeout 3/7] ARM64: add SBSA Generic Watchdog device
 node in amd-seattle-soc.dtsi
Date: Sun, 14 Jun 2015 06:57:54 -0700
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To: Fu Wei <fu.wei@linaro.org>, Timur Tabi <timur@codeaurora.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>, Linaro ACPI Mailman List <linaro-acpi@lists.linaro.org>, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Wei Fu <tekkamanninja@gmail.com>, G Gregory <graeme.gregory@linaro.org>, Al Stone <al.stone@linaro.org>, Hanjun Guo <hanjun.guo@linaro.org>, Ashwin Chaugule <ashwin.chaugule@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Vipul Gandhi <vgandhi@codeaurora.org>, Wim Van Sebroeck <wim@iguana.be>, Jon Masters <jcm@redhat.com>, Leo Duran <leo.duran@amd.com>, Jon Corbet <corbet@lwn.net>, Mark Rutland <mark.rutland@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, rjw@rjwysocki.net
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On 06/14/2015 03:05 AM, Fu Wei wrote:
> On 13 June 2015 at 04:54, Timur Tabi <timur@codeaurora.org> wrote:
>> On 06/10/2015 12:47 PM, fu.wei@linaro.org wrote:
>>>
>>> +                       reg = <0x0 0xe0bb0000 0 0x10000>,
>>> +                               <0x0 0xe0bc0000 0 0x10000>;
>>
>>
>> I think the sizes are wrong.  They should be 0x1000 instead of 0x10000.
>
> This has been proved by test, it works well on Seattle
> Foundation model has same value. So I don't think it is wrong
>
> otherwise someone has the data sheet of Seattle B0, and it shows that is wrong.
>

If only 0x1000 is used, why would you have to reserve 0x10000 ?
You never access any higher addresses, so no matter what the datasheet
says, 0x1000 should be sufficient. What matters is what the driver uses.

Guenter